package com.wooophone.common.util;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Md5Util {
	/**  
     * MD5 加密  
     */   
    public static String getMD5Str(String str) {   
        MessageDigest messageDigest = null;   
   
        try {   
            messageDigest = MessageDigest.getInstance("MD5");   
   
            messageDigest.reset();   
   
            messageDigest.update(str.getBytes("UTF-8"));   
        } catch (NoSuchAlgorithmException e) {   
            System.out.println("NoSuchAlgorithmException caught!");   
            System.exit(-1);   
        } catch (UnsupportedEncodingException e) {   
            e.printStackTrace();   
        }   
   
        byte[] byteArray = messageDigest.digest();   
   
        StringBuffer md5StrBuff = new StringBuffer();   
   
        for (int i = 0; i < byteArray.length; i++) {               
            if (Integer.toHexString(0xFF & byteArray[i]).length() == 1)   
                md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray[i]));   
            else   
                md5StrBuff.append(Integer.toHexString(0xFF & byteArray[i]));   
        }   
   
        return md5StrBuff.toString();   
    }   

}
